Brake-shoe.



No. 832,813. PATENTED OGT. 9, 1906. W. H V. ROSING & F. L. GORDON.

BRAKE SHOE.

APPLICATION FILED FEB.17,1906.

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No. 832,813. PATENTED OCT. 9, 1906. W. H. V. ROSING & P. L. GORDON.

BRA-KB SHOE.

UNITED STATES PATENT; OFFICE.

WILLIAM H. V. ROSING, OF ST. LOUIS, MISSOURI, AND FRANK L. GORDON, OFCHICAGO, ILLINOIS.

BRAKE-SHOE.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filecl February 1'7, 1906. Serial No. 301,639.

To ail whom it may concern.-

Be it known that we, WILLIAM H. V. Ros- ING, a resident of the city ofSt. Louis, State of Missouri, and FRANK L. GORDON, a resident ofChicago, county of Cook, and State of Illinois, citizens of the UnitedStates, have made'and invented certain new and useful Improvements inBrake-Shoes, of which the following is a specification.

Our invention relates to an improvement in brake-shoes for locomotivesand cars.

It is well known that on wheels, and particularly those employed withheavy engines now in common use, there is an excess of wear upon thatportion of the wheel-tread adjacent to the flange caused by contact withthe rail. To prevent the brake-shoe from impinging upon the rail-wornportion of the tread and increasing the wear by the frictional contactof the shoe, the latter has in some instances been constructed with achannel overlying that portion of the tread contacting with the rail,such shoe satisfactorily performing its functions until such time as itbecomes worn down to the bottom of the channel, whereupon it is open tothe same objections as shoes of ordinary construction, which bear uponall parts of the wheel-tread. In other instances brake-shoes have beenconstructed with an opening or openings extending entirely through thesame; but such a shoe has not come into general use by reason of thefact that the bridges connecting the body and flange of the shoe at alltimes contact with the wheel-tread, the result being that when the shoeis but partly worn down its strength is not suflicient to withstand thestrain imposed upon it.

The object of our invention is to overcome these defects and to providea shoe so constructed that it will bear upon the wheelflange and alsoupon the outer edge of the wheel-tread or upon that part of the latterleast subjected to wear by contacting with the rail and at the same timebe sufliciently strong and capable of use until worn down to a greaterextent than a shoe of ordinary construction.

With these and other ends in view it consists in certain novel featuresof construction, as will be hereinafter described, and speciii callypointed out in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of abrake-shoe constructed in accordance with our invention Fig. 2 is alongitudinal sectional view thereof. Fig. 3 is a bottom plan viewthereof, and Fig.

4 a view in cross-section taken on the line 4 4 of Fig. 3. Fig. 5 is anend view of a shoe adapted for use upon blind wheels and having ourinvention applied thereto. Fig.

6 is a sectional view through the key-lug of the shoe illustrated inFig. 5.

Our improved shoe is formed of cast iron, steel, or other metal ormetals, is curved'in its length to conform to the shape of the wheel,and is preferably of ordinary thick ness. As shown in the drawings, itcomprises a body A, the lower or wearing face of. which is adapted tocontact with the outer 7o edge of thewheel-tread or that portion thereofleast subject to wear from contact with the rail, and a curved flange B,adapted to re ceive and contact with the flange O of the wheel D, asillustrated in Fig. 4, a space E in- 7 5 tervening between said body Aand flange B the entire length of the shoe, this intervening spacecoming opposite the rail-worn portion of the wheel-tread, the distancebetween the two parts or portions of the shoe approximat- 8o ing thewidth of said rail-worn portion of the tread.

To unite the two portions A and B of the shoe, we employ bridges,preferably cast or otherwise formed integral therewith, said 8 5bridges, however, extending upwardly from the back or upper surfaces ofthe body A and flange B, the bottom of each bridge coinciding with theback of the shoe. These bridges are preferably three in number, one ateach 0 end of the .shoe, as illustrated at F, and the third, G, at aboutthe center thereof, the latter also performing the function of theordinary key-lug, by means of which it may be at tached to thebrake-head, (not shown,) an 5 opening H being formed therein for thepassage of the key. As this key (not shown) is ordinarily of greaterlength than the shoe, an opening I is also formed in the bridges F, intoor through which the key may extend.

From the foregoing it will be understood that while a shoe constructedas above described does not come into frictional contact with therail-worn portion of the wheel-tread, yet at the same time it is inevery way as strong as the shoe of ordinary construction, and being ofthe ordinary thickness and containing the usual'amount of metal it iscapa- IOO ble of use until worn down to a greater eX- tent than ashoewherein no channel is formed. These advantageous features of the shoeare secured by reason of the location of the bridges uniting the bodyand flange, the same being so disposed that they are in no way subjectedto friction or wear, and therefore necessarily remain intact during theentire life of the shoe.

It will of course be understood that We do not limit ourselves to thenumber of bridges, as above described, nor to the exact position of thesame as illustrated in the drawings, as any number thereof may beemployed and so disposed as will properly unite the several parts andlend su'lflcient strength to the shoe to withstand the strain imposedupon it. Furthermore, while we have described the invention as appliedto a flanged shoe it will be apparent that it may also be applied toshoes constructed for use in connection with a blind wheelthat is, awheel formed without a flange. In such instance the shoe will beconstructed as illustrated in Figs. 5 and 6, A and A representing thetwo separated parts of the body of the shoe with the space E interveningbetween them, such space coming opposite the rail-worn portion of thewheel-tread, as in the first instance, bridges F connecting the twoseparatedparts A and A at the ends of the shoe and a central bridge G ator about the center thereof, said latter bridge being provided with thekey-opening H. These bridges will extend upwardly from the back or uppersurfaces of the body of the shoe, as in the case of the shoe firstdescribed, and being in no way subjected to friction or wear fromcontact with the tread of the wheel retain their strength during theentire life of the shoe, and thus permit the latter to wear down to amuch greater extent than in those instances where bridges or connectingmetal are subjected to the same wear as the face of the shoe.

Having fully described our invention, what we claim as new, and desireto secure by Letters Patent, is-

1. A brake-shoe comprising two parts, separated opposite therail-wearing portion of the wheel-tread, and bridges uniting said parts,said bridges extending upwardly and beyond the back of said shoe,substantially as described.

2. A brake-shoe comprising two separated parts, and one or more bridgesuniting the same, the bottom of the bridge coinciding with the back ofsaid shoe, substantially as described.

3. A brake-shoe comprising a body and flange with a space between them,and one or more bridges uniting the same, the bottom of the bridgecoinciding with the back of the shoe, substantially as described.

4. A brake-shoe comprising a body and flange so separated as to preventcontact with that portion of the wheel-tread adjacent to the flange, andone or more bridges uniting said body and flange of the shoe andextending outwardly from the back of said shoe, substantially asdescribed.

5. A brake-shoe comprising a body and flange with a space interveningbetween them, and one or more bridges uniting the same, the bottom ofsaid bridge coinciding with the back of the shoe, said bridge beingformed with a key-opening therein, substantially as described.

6. A brake-shoe comprising a body and flange with an intervening spacebetween them, end and central bridges uniting the same and formed withkey-openings therein,

the bottom of said bridges coinciding with the back of the shoe,substantially as described.

Signed at the city of St. Louis and State of Missouri this 6th day ofFebruary, A. D.

WILLIAM H. V. ROSING. -Witnesses:

C. F. MGCUEN, W. A. SEILER.

Signed at Chicago, in the county of Cook and State of Illinois, this 7thday of February, A. D. 1906.

FRANK L. GORDON. Witnesses:

F. L. WHrrooMB, U. MULLIGAN.

